Configuration Function; Basic Sequence; Basic Sequence Of Operation - Canon imageCLASS MF4890dw Service Manual
Hide thumbs
Also See for imageCLASS MF4890dw:
- Settings manual (120 pages) ,
- Basic operation manual (116 pages) ,
- Starter manual (60 pages)
Table of Contents
Advertisement
2
Technical Overview > Basic Configuration > Basic Sequence > Basic Sequence of Operation
Basic Configuration
Configuration function
The machine may be broadly divided into the following 7 functional blocks: engine control
system, document exposure/feeding system, laser exposure system, image formation system,
pickup/transport/delivery system, fixing system, and externals/auxiliary control system.
Engine control
system
Pickup/transport/delivery system
External device
2
Technical Overview > Basic Configuration > Basic Sequence > Basic Sequence of Operation
Document exposure
/Feeding system
Laser exposure system
Image formation system
Fixing system
Externals and control system
F-2-1
Basic Sequence
■ Basic Sequence of Operation
The engine controller controls the operation sequence. The following table provides an outline
of machine operation occurring from when the power switch is turned on to when printing
ends and motors stop, indicating the purposes of intervals and engine operation. For details
of various loads, see the timing chart.
Interval
WAIT
From power-ON until initial
To clear potential from the drum
drive for main motor is
surface and to clean the transfer
(Wait)
completed.
roller.
Also to bring the heater
temperature up to the targeted
temperature.
STBY
From the end of the WAIT
To keep the printer ready to
period or the LSTR period
print.
(Standby)
until the print command is
sent from the main controller.
Or, from the end of the LSTR
period until power switch is
turned OFF.
INTR
From the input of the print
To stabilize the photosensitive
command from the main
drum sensitivity in preparation
(initial
controller until the pick-up
for printing. Also to clean the
rotation)
solenoid is turned ON.
transfer roller.
PRINT
From the end of the INTR
To form image on the
period until the top of page
photosensitive drum based
(print)
sensor detects the trailing
on the VIDEO (/VD01, /VD02,
edge of paper.
VD01, VD02) signals input
from the main controller, and to
transfer the toner image onto
paper.
LSTR
From the end of PRINT
To deliver the last paper
period until the Main motor
completely out of the printer.
(last
stops.
rotation)
2-2
Purpose
Remarks
Detect whether the
Toner cartridge is
installed or not.
Return to the INTR
period as soon as
another print command
is sent from the main
controller.
T-2-1
2-2
Advertisement
Table of Contents
Troubleshooting
